Results 31 to 40 of about 194,218 (173)
四川大学学报. 自然科学版, 2012 为探讨短小芽孢杆菌(Bacillus pumilus)的基因调控关系,通过在其亲缘关系最近的模式菌——枯草芽孢杆菌(Bacillus subtilis)中寻找同源转录因子及其调控基因的方式,预测出B.pumilus的候选转录调控网络;并利用转录因子绑定位点的位置权重矩阵(PositionalWeight Matrix)在B.pumilus全基因组的基因上游区域扫描rnotif的方式来验证候选转录调控网络;最后再整合其他B.pumilus专属的调控数据,最终形成一个较完备的B ...
桂俊鸿 +5 more
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Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Osteoarthritis (OA) therapy remains constrained by the coexistence of irreversible cartilage loss and a persistently hostile joint microenvironment characterized by oxidative stress, synovial inflammation, and impaired tissue‐regenerative signaling.
Xinyu Wu +11 more
wiley +1 more source
Guangtongxin yanjiu, 2014 通过对激光外调制不同方式的对比分析,重点研究了AOM（声光调制）器件的原理及控制方法,提出了三种可控调制方法,且在控制方面分别进行了对比验证。采用其中的TTL电平（典型值高电平3.5V,低电平0.2V）调控方法,将数字信号经FPGA（现场可编程门阵列）以2FSK（二进制移频键控）方式进行调制编码,调制信号通过AOM加载于激光上,激光通过自由空间传输,借助串口实现了通信速率为115.2kbit/s的数字通信,且该激光外调制通信系统高频载波达到了0.7MHz左右。
徐山河, 肖沙里, 王珊, 易星
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Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Biodegradable magnesium alloys are limited in orthopedic applications due to their rapid corrosion and poor interfacial stability. In this work, a composite coating is constructed via magnetic filtered cathodic vacuum arc (MFCVA) deposition of a Zn interlayer, followed by hydrothermal in situ generation of ZnO to induce hydroxyapatite (HA ...
Chao Zhang +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Fe‐N‐C electrocatalysts are considered promising alternatives to platinum‐based catalysts for advancing the development of metal–air batteries. However, the simultaneous realization of scalable synthesis, hierarchical mass‐transfer pathways, and precise regulation of Fe‐N4 sites remains challenging. Different from conventional Fe‐N‐C synthesis,
Bingye Song +7 more
wiley +1 more source
Guangtongxin yanjiu, 2012 新型相位调制格式技术能够有效地减少光传输损伤,是光传输系统中的重要技术。从理论上分析了光MDPSK（M进制差分相移键控）的调制解调原理,构建了通用的调制解调结构,并首次推导出MDPSK的通式和解调公式,最后以基于CSRZ（载波抑制归零,占空比为67%）码的DQPSK（差分正交相移键控）、8DPSK（3阶差分相移键控）和16DPSK（4阶差分相移键控）为例,用MATLAB软件仿真得到了其调制后的频谱图和解调后的眼图。仿真结果表明,随着级数的增加,MDPSK调制格式的频谱宽度会逐渐变窄 ...
房文敬 +4 more
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GHK‐Cu Delays Aging Through the Repair of Mitochondrial Dysfunction
Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Althugh glycyl‐L‐histidyl‐L‐lysine copper (GHK‐Cu) shows antiaging potential, its precise molecular mechanisms remain unclear. Using Caenorhabditis elegans (C. elegans) as an in vivo aging model, we observed that GHK‐Cu extended organismal lifespan and improved stress resilience.
Haoquan Yu +8 more
wiley +1 more source
, 2002 金融调控法作为宏观调控法的重要组成在理论界已基本达成共识 ,但金融调控法体系之构造却是众说纷纭 ,莫衷一是。本文依照法学部门传统划分方法———调整对象一致性原则 ,对金融法之调整对象进行了分析 ,归纳出金融调控法律关系之特征 ,并据此对学界金融调控法体系的九种代表性观点进行评介 ...
刘志云, 郑普英
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Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT MoS2 is considered a promising electrocatalyst for the hydrogen evolution reaction (HER) because of its low cost and excellent stability. However, its practical application is severely limited by the scarcity of edge active sites and poor intrinsic electrical conductivity.
Ting Wang +6 more
wiley +1 more source
Gongye shui chuli, 2003 火电厂凝结水、给水和锅炉水的加药处理，是重要的水质调节措施。实施加药自动控制，是实现水质调节实时性和准确性的有效手段。在自动加药控制系统中，由于被控对象存在时滞大、负荷变化大和扰动大的特征，常规PID控制达不到满意的控制效果。文章应用改进的PID控制算法，实现了系统控制的良好稳定性、鲁棒性和控制品质，现场应用控制效果满意。
曹顺安, 刘开培, 刘光临
doaj +2 more sources